Launch Odin by right clicking it and selecting Run as Administrator. Ensure that nothing Samsung related is running in the background of your PC. Check the Task Manager.

Select the PDA slot in Odin and target the firmware you unzipped earlier.

Plug your phone in to the PC using the factory supplied USB cable. Do not use hub. Odin should detect your phone. Your PC may install some drivers.

Press start in Odin.

Let the phone fully reboot. Perform a factory wipe.

Sent from my GT-I9300 using Tapatalk 2

Hey there! first time poster. I tred to root my Sprint GS3 SPH-L710 using odin v1.85. DIDNT WORK. my screen is exactly as the one posted above. i followed your steps exactly andmy phone has been rebooting now for a half hour. the screen is alll black with white letters saying "SAMSUNG" pulsating a blueish color.....i dont know what i did. i just want my phone back. ANY help is greatly appreciated

Welcome to the forum!
Not sure why you're using Odin v1.85, that's a really old version. Try downloading v3.07, that's the latest version of Odin. I don't have a link for you but a simple Google Search will bring up a number of places where you can download it.
Good luck!

Re: Firmware upgrade encountered an issue. PLEASE HELP! **

Originally Posted by CR6

Welcome to the forum!
Not sure why you're using Odin v1.85, that's a really old version. Try downloading v3.07, that's the latest version of Odin. I don't have a link for you but a simple Google Search will bring up a number of places where you can download it.
Good luck!

I have tryed to install the factory with odin, and am totaly unable to get past the samsung screen after the att splash page. can any one help me? i can get to my download on my phone and it loads up fine but can not get passed the samsung
(*its the pulsating samsung from blue to white, and a blue light for a status light at the top left